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Table 2 Multiple logistic regression analyses predicting NSSI during the 18-month follow-up period

From: Affective instability and impulsivity predict nonsuicidal self-injury in the general population: a longitudinal analysis

Predictors

Any NSSI

Development of NSSI

Continuation of NSSI

Univariate:

 Impulsivity

6.62 (3.73)**

11.7 (9.85)**

2.13 (1.78)

 AI

24.1 (13.0)***

16.7 (11.8)***

10.4 (9.32)**

Multivariate:

 Impulsivity

6.39 (3.83)**

11.1 (9.67)**

2.47 (2.74)

 BPD

155.6 (164.3)***

87.3 (143.7)**

18.2 (15.9)**

 Age

0.91 (0.02)***

0.91 (0.03)**

0.95 (0.03)

 Sex

0.77 (0.41)

0.50 (0.38)

0.79 (0.87)

Multivariate:

 AI

17.3 (10.5)***

13.5 (10.1)**

10.3 (10.6)*

 BPD

38.0 (31.4)***

34.6 (45.0)**

8.59 (8.60)*

 Age

0.92 (0.17)***

0.92 (0.02)**

0.95 (0.03)

 Sex

0.45 (0.27)

0.30 (0.25)

0.74 (0.72)

  1. Note. Values are odds ratios (and linearized standard errors). All predictors were measured at Time 1. The dependent variable in each model was the presence of NSSI during the follow-up period assessed at Time 2. Models predicting any NSSI included all participants regardless of whether they had a history of NSSI at Time 1 (n = 2344). Models predicting the development of NSSI included only participants with no history of NSSI at Time 1 (n = 2259). Models predicting the continuation of NSSI included only participants with a history of NSSI at Time 1 (n = 85)
  2. NSSI nonsuicidal self-injury, AI affective instability; BPD borderline personality disorder
  3. *p < .05
  4. **p < .01
  5. ***p < .001